1,1

Products of pairs of elements of A169911 in carryless digital root arithmetic in base 10.

Table of n, a(n) for n=1..57.

Index entries for sequences related to carryless arithmetic

a(1) = 9 because the smallest prime in carryless digital root arithmetic in base 10 is 3, and 3*3 = 9.

Cf. A169911.

Sequence in context: A104516 A279618 A158503 * A185653 A326150 A167154

Adjacent sequences: A179503 A179504 A179505 * A179507 A179508 A179509

base,nonn

Jonathan Vos Post, Jul 17 2010

Edited and corrected by N. J. A. Sloane, Jul 17 2010

approved